$230 Find Cheap Flights from California to Ireland

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Good to know

Low seasonJanuary
Cheapest flight$230
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Sacramento to Dublin

Flights from California to Ireland: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from California to Ireland 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with Aer Lingus
SFO
-
DUB
Jan 2026
If flying to Ireland, the direct flight from SFO to DUB on Aer Lingus is the way to go to avoid the hassles and uncertainty of mid journey stop-overs.
DavidFlew with Aer Lingus
SFO
-
DUB
Dec 2025
Check gate; it’s not in the international terminal
Verified travelerFlew with Aer Lingus
LAX
-
DUB
Jul 2024
Go to the airport early, LAX is the worst airport to fly out from. There is just so much traffic on the way to get there. We used the flyaway option in van nuys, ( buy your parking ticket in advance) costing us only 115 dollars for parking for over two weeks and it’s very secure. The buses go every 15 minutes from there directly to LAX. Best way to get to and from LAX. Check in was easy.

FAQs for booking flights from California to Ireland

  • How does KAYAK find such low prices on flights from California to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from California to Ireland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from California to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from California to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from California to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to Ireland?

    American Airlines connects California to Ireland with 11 flights per week and both British Airways and Aer Lingus also offer 11 flights per week.

  • How many airports are there in Ireland?

    There are 6 airports in Ireland. The busiest airport is Dublin Airport (DUB), with 86% of all flights arriving there.

  • Which is the cheapest airport to fly into in Ireland?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ireland is Dublin Airport (DUB), with an average flight price of $500.

  • What is the cheapest day to fly to Ireland?

    Based on KAYAK data, the cheapest day to fly to Ireland is Wednesday where round-trip tickets can be as cheap as $736. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $839 on average.

  • What is the cheapest time of day to fly to Ireland?

    The cheapest time of day to fly to Ireland is generally at night, when round-trip flights cost $770 on average. The most expensive time of day to fly to Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $812.

  • What is the cheapest flight to Ireland?

    The cheapest ticket to Ireland from California found in the last 72 hours was to Dublin, at $495 round-trip. The most popular route is Los Angeles (LAX) to Dublin (DUB) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $495.

  • What is the cheapest month to fly from California to Ireland?

    The cheapest month for flights from California to Ireland is December, when tickets cost $627 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,146 and $884 respectively.

  • How far in advance should I book a flight from California to Ireland?

    To get a below average price on the flight from California to Ireland, you should book around 3 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

  • How many cities have direct flights to Ireland?

    From California, there are direct flights to Ireland from 2 cities. The city with the most direct flights is San Francisco, with 24 direct flights each week.

  • How many direct flights to Ireland are there each day?

    There are around 7 direct flights from within California to Ireland every day. Most flights (55%) depart in the evening.

  • How many direct flights to Ireland are there each week?

    Each week there are around 44 direct flights from within California to Ireland. The most common day for departures is Monday, with 18% of flights taking off on this day.

  • How long is the flight to Ireland?

    An average nonstop flight from California to Ireland takes 18h 56m, covering a distance of 5060 miles. The shortest route is Las Vegas (LAS) to Dublin (DUB) with an average flight time of 9h 45m.

  • How many long-haul flights are there to Ireland each week?

    There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Ireland. Instead, there are 44 long-haul flights (6-12 hour flight duration), with the most arriving from San Francisco.

  • What are the most popular destinations in Ireland?

    Based on KAYAK flight searches, the most popular destination is Dublin (92% of total searches to Ireland). The next most popular destinations are Shannon (4%) and Cork (3%). Searches for flights to Knock (0%), to Milltown (Kerry) (0%) and to Donegal (0%) are also popular.

Everything you need to know for your flight to Ireland

Cabin class types available on flights to California

Cabin classes available on flights to California. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Irelandfrom $1,070
Business Class flights to Irelandfrom $1,056
Premium Economy Class flights to Irelandfrom $3,583
Economy Class flights to Irelandfrom $495